Plants with a well-developed, stout stem. Stipules free from petiole and from each other but often distinctly widened at base and to nearly fully amplexicaul. Racemes with a distinct peduncle, densely many flowered; bracts soon falling. Bracteoles present. Stig­ma hairy, sometimes only minutely. Legumes with a long stipe, glabrous, inflated, incompletely to completely 2-locular.